<?php
/**
 * This file houses the ExceptionalMysqli class.
 *
 * Copyright (c) 2010, Kalkomey Enterprises, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, this list
 *   of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this 
 *   list of conditions and the following disclaimer in the documentation and/or other
 *   materials provided with the distribution.
 * - Neither the name of the Kalkomey Enterprises, Inc. nor the names of its 
 *   contributors may be used to endorse or promote products derived from this 
 *   software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * @license http://www.opensource.org/licenses/bsd-license.php New BSD License
 * @copyright Copyright (c) 2010, Kalkomey Enterprises, Inc.
 * @link http://code.google.com/p/swerv
 * @package Framework
 * @subpackage Library
 */

/**
 * The ExceptionalMysqli class wraps the mysqli object and throws exceptions instead of triggering errors when problems occur.
 *
 * @package Framework
 * @subpackage Library
 */
class ExceptionalMysqli extends mysqli {

	/**
	 * Object constructor.
	 *
	 * You can pass all the same parameters to this constructor as you would when instantiating a mysqli object.
	 *
	 * @throws DatabaseConnectionException
	 *
	 * @uses StringUtility::addSingleQuotes()
	 *
	 * @return ExceptionalMysqli
	 */
	public function __construct() {
		$args = func_get_args();
		eval("parent::__construct(" . join(',', array_map('StringUtility::addSingleQuotes', $args)) . ");");
		if ($this->connect_errno) {
			throw new DatabaseConnectionException($this->connect_error);
		}
	}
	
	/**
	 * Wrapper for the mysqli::query method.
	 *
	 * @throws QueryException
	 *
	 * @param string $query the SQL query to send to MySQL
	 * @param int $resultMode Either the constant MYSQLI_USE_RESULT or MYSQLI_STORE_RESULT depending on the desired behavior
	 *
	 * @return mysqli_result
	 */
	public function query($query, $resultMode = MYSQLI_STORE_RESULT) {
		$result = parent::query($query, $resultMode);
		if ($this->errno) {
			throw new QueryException($this->error);
		}
		return $result;
	}
}
